How to distinguish the quality of wrapping film of packaging materials

Stretch wound film is different from general wound film. There are high requirements for tensile properties and puncture resistance. Therefore, we should pay attention to the selection. So how to distinguish the quality of wound film?

The tensile film has the characteristics of high transparency, high longitudinal elongation, high transverse tear strength and good puncture performance. It is widely used in the packaging of hardware, chemical, food and other products.

The stretch film tightly wraps the goods for easy transportation. The deformation stress produced by mechanical stretching device or manual forced stretching film is a very common packaging form in the world. The wound film adopts imported resin and advanced film extrusion production process, with good tensile property, tear resistance, strong penetration resistance, high transparency, good self adhesion, high shrinkage, tight packaging and no looseness. It can be widely used for single piece or pallet packaging of chemical raw materials, fertilizer, food, mechanical and electrical products, light textile products and other bundled packaging. High transparency and good quality. Good glossiness, fast shrinkage at low temperature, suitable for small packaging, used in the food field (special types of food).

Winding film detection: The winding film often encounters the problem of poor tensile property of the stretch mark in the use process, which is easy to lead to its package non-compliance, and the main role of the winding package will be greatly discounted. Therefore, consumers should pay attention to the film when purchasing the stretch. If they want to test and identify the tensile property, they should tear it from the length direction of the stretch film first, and then from the horizontal direction. The stretched film will have a strong impact force, and the toughness will tear easily. If it is too thin, the toughness will be greatly reduced, and the tensile property will become worse.